Celebrity Birthdays for October 7 – Simon Cowell and More

Simon CowellAge: 54Occupation: Record Executive, Television Personality, and EntrepreneurKnown For: His former role as a judge on 'American Idol,' his current role as a judge on 'X Factor,' his frequently brusque critiques, his charity work for children's and animal charities, and his love-hate relationship with singer Paula Abdul

John MellencampAge: 61Occupation: Singer, Songwriter, and MusicianKnown For: His catchy, populist brand of heartland rock, selling 40 million albums worldwide, racking up 22 Top 40 hits like 'Pink Houses' and 'Jack & Diane,' and being one of the founding members of Farm Aid

Yo-Yo MaAge: 58Occupation: Cellist and ComposerKnown For: Being one of the most famous cellists of the modern age, and winning multiple Grammy Awards, the National Medal of Arts, and the Presidential Medal of Freedom

Thom YorkeAge: 45Occupation: Singer, Songwriter, and MusicianKnown For: Being the lead vocalist and principal songwriter of the band Radiohead, songs like 'Creep,' and being named to Rolling Stone Magazine's 100 Greatest Singers of All Time